Everything is this world is created of an atom. And according to the laws of physics, everything created by an atom will one day decay. It means the existence of a thing will cease.
As humans, we are born into this world of ours. And the second we are born into this world we begin the process of decay. What will decay? The physical body will. Not the spirit!
You see, when we go through life we are in a constant fight and struggle of the physical over the spiritual. And we can see this in everything we do. But the final victory will belong to the spirit because it can neither be created nor can it be destroyed. It can merely change form. And I know this is the law of physics governing energy but the spirit is energy and although it is connected to the physical body it is not housed there. It exists in the cosmos.
So death is not the end all as religions will lead you to believe. Death is the process of decay meaning the separation of the physical body from the spirit body.
Death, therefore, is not the end of life but the beginning.

(Image: AI-Generated using Microsoft Bing Image Creator)